Rotary pump.



J. P. SMITH,

RUTARY UMP. Y APPLICATION FILED mo.1v,191o.

wmm

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5 Q. J.. la f @n fw q che ring 18 maintains the same enti the pis- *non or rotor in tight engagement with che cylinder wells and therefore obvietes ieekage between the suction anni. isciierge Sies of *che pump. Y

' Having 'thus described the invention, what l. in combination, e casing heving'e conicel clieinbe therein with eneccentric socket, e, conical pieton see'fed in the chamber and heffing en excension seated in the socket, end ineens enacting with the extension to heid the piston in engagement Wili one Wall of the chamber, seid Ineenspeirniting the piston to rest freely in the conical chamber.

2. A pump comprising a casing having e conical piston chembei, e conical piston therein, means for holding seid piston eccentrically in the chamber against one Well thereof, seid means permitting the piston to rest freely on the buse of the chamber, end piston Wings carried by the piston.

A pump comprising e' casing havingn conical piston chamber, e conical piston therein, ineens for holding seid piston eccenti'icelly in the chamber against one weil thereof, seid mee-ns pei'mitting the'piston te rest finely on lie base ci' the chamber, enel spring pifessed pieton Winge siideby rnonnted in the piston and conforming with iie 'Wells of 'the chamber.

the combination with e piston casing having e conical pistonclieniber therein, and e. coni-I ca socket depending from the chamber and eccenti'icelly positioned4 therein, of e conical pison hei/ing e conical boss seated in scifi socket and a connecting boss, of e pecitne ring fitting the' Weils of the cheminee en having an eccentriceily disposed aperture io receive the connecting boss, ineens eo pifevent turning of scid pecking ring, seid Ineens permitting the packing ring fno resi, i'eely on the piston, spring pressed pieton Wings carried by the piston, seid piston being adapted to rest freely against the heee of lle chamber and having one sideresting egeinstcne Wel of the chamber, together with inlet end out let ports on opposite sides of the engaging point, enel pipe connecting oeps secured to ehe casing, one ci seid cape 4eenlingI seid menne in piece.

:in testimony' whereof i efnin my eigneinie in presence of two Wi'neeeee Y JOHN i?. Sii/HTH.

in Enmonsffoii, ein, L. E, WAL'mne 

